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Old 10th Aug 2020, 6:26 pm   #5
David Simpson
Nonode
 
Join Date: Mar 2008
Location: Aberdeen, UK.
Posts: 2,838
Default Re: Old & New Rotary Switches

For those folk who might be planning a project involving multi wafer switch connections, thought I'd offer a couple of hints for the uninitiated.
Even for experienced folk, this is fiddly & at times complicated. Throw in 10 wee latched/on-off-on toggle switches & things get more complicated. I prefer to use coloured-coded wiring, but mono-coloured wire with sleeve identification(RS Kit 557-001) could be used. Or a combination. I've chosen the good old resistor mnemonic - BBRO- - - . So sw contact 1/toggle sw 1 = Brown, - - - sw contact 10/toggle sw 10 = Black. I've also crayoned in all the colours alongside the rotary switches. This'll all be on the underside of a panel, so naebody will ken after completion. Looks silly - maybe. Saves time - definitely. Easy to follow through - most certainly. There will eventually be four panels to join up, and I've coloured-in my construction diagram. Definitely makes it easy-peasy for an old analogue duffer like me. Mind you, back in the early '70's, myself & fellow RAF electronics instructors taught our apprentice technicians to "ident" the wiring for their final qualifying construction project, I recall. As the poor sods had only 8 hours from cutting-out aluminium sheeting, bending to form a chassis, drilling/tapping, soldering components on a large sheet of vero-board, and so on.

Regards, David
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